What was found
FOUND MODEM MANAGER TO BE INOP WITH STRONG ELECTRICAL BURNING ODOR. WIFI INOP. ATTEMPTED RESET. IMMEDIATELY SMELLED FUMES (ODOR SMELLED SIMILAR TO ELECTRICAL FIRE). ODOR OBSERVED IN COCKPIT AND FA2 SMELLED ODOR IN MAIN CABIN. ODOR WAS STRONGER AROUND ROWS 12-13. TURNED WIFI OFF. ODOR SUBSIDED WHEN INTERNET POWER WAS TURNED OFF. NO VISIBLE SMOKE OBSERVED. PERFORMED T/S IAW FIM TASK 21-20-00-810-801-A. FOUND NO ABNORMALITIES / ODOR ON CABIN LIGHTS SYSTEM, GALLEY, LAVATORIES, WINDSHIELD HEAT SYSTEM, COCKPIT LIGHTS. UPON REPLICATING THE DISCREPANCY, FOUND MODMAN TO BE INOP WITH STRONG ELECTRICAL BURNING ODOR. DEFERRED THE WIFI SYSTEM PER MEL 44-16 REF AML PAGE 105002267.